slow zvol performance compared to files on the same pool

2009-01-03 Thread Pete French
I was experimenting with iscsi earlier, using both a flat file as the backing store and also a zvol. I noticed that the zvol was giving me dreadful performance - reading at about 20 meg/second and writing at about 12. the fklat file gives about 45 meg/second both ways. i thouht it was to do wuth

Panic in RELENG_7_1 with fxp(4)

2009-01-03 Thread Brandon Weisz
After running 7-PRERELEASE from around November 25th, I upgraded today to find the system panics repeatably on RELENG_7_1 sources. I can boot back to the old kernel and it operates as expected. It seems to be related to fxp(4). FreeBSD didy.internal 7.1-RELEASE FreeBSD 7.1-RELEASE #0: Sat

Re: slow zvol performance compared to files on the same pool

2009-01-03 Thread Andrew Snow
Pete French wrote: I was experimenting with iscsi earlier, using both a flat file as the backing store and also a zvol. I noticed that the zvol was giving me dreadful performance - reading at about 20 meg/second and writing at about 12. the fklat file gives about 45 meg/second both ways. i

Re: rdump stuck in sbwait state (RELENG_7)

2009-01-03 Thread Terry Kennedy
Sorry, I can't think of any - by the time you see it hung, whatever went wrong has already happened. You might glean some insight from the TCP socket state (on the FreeBSD side, use 'netstat -A' to print the PCB address and gdb to dump the contents but I'm not sure how to get this data out

Re: slow zvol performance compared to files on the same pool

2009-01-03 Thread David Ehrmann
Andrew Snow wrote: On 7.x (where ZFS is really quite broken for server use - don't waste too much time on it) How exactly is it broken? I know there are some issues, but so serious you'd say it's broken? ___ freebsd-stable@freebsd.org mailing list

Re: Panic in RELENG_7_1 with fxp(4)

2009-01-03 Thread Garrett Cooper
On Jan 3, 2009, at 5:17 PM, Brandon Weisz wrote: After running 7-PRERELEASE from around November 25th, I upgraded today to find the system panics repeatably on RELENG_7_1 sources. I can boot back to the old kernel and it operates as expected. It seems to be related to fxp(4). FreeBSD